Unfortunately, Samsung is the second Apple, they make it very hard to unblock their phones, known to install tons of spyware (even if you don't use their apps a

Unfortunately, Samsung is the second Apple, they make it very hard to unblock their phones, known to install tons of spyware (even if you don't use their apps and don't have an account). Carefully investigate if device is rootable (even if you don't plan to) before you buy.